Ventilator



FIG. 1 is a perspective view of a ventilator (dunstgebläse) comprising a new, original and ornamental design;

FIG. 2 is a left side elevational view of the ventilator (dunstgebläse) shown in FIG. 1;

FIG. 3 is a right side elevational view of the ventilator (dunstgebläse) shown in FIG. 1;

FIG. 4 is a front view of the ventilator (dunstgebläse) shown in FIG. 1; and

FIG. 5 is a rear view of the ventilator (dunstgebläse) shown in FIG. 1.

FIG. 6 is a top plan view of ventilator (dunstgebläse) shown in FIG. 1; and,

FIG. 7 is a bottom view of ventilator (dunstgebläse) shown in FIG. 1.

The broken lines represent portions of the structure that forms no part of the claim. 

CLAIM We claim the ornamental design for a ventilator, as shown and described. 